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The 4G63 engine is a legendary powerplant known for its robust performance and tuning potential. Building a 4G63 Eclipse to achieve 450 horsepower is a thrilling endeavor that requires careful selection of components and tuning strategies. In this article, we will explore the best camshaft options, ECU tuning techniques, and supporting parts necessary to reach this performance goal.
Understanding the 4G63 Engine
The 4G63 engine, produced by Mitsubishi, is a 2.0L inline-four turbocharged engine that has been widely used in various models, including the Eclipse. Its robust design and aftermarket support make it a favorite among tuners. To achieve 450 HP, you need to understand the engine’s capabilities and limitations.
Choosing the Right Camshaft
The camshaft plays a crucial role in engine performance, influencing the engine’s ability to breathe and produce power. Selecting the right camshaft is essential for maximizing horsepower.
Best Camshaft Options
- HKS 272 Camshaft: Known for its aggressive lift and duration, perfect for high RPM power.
- FP 2G Camshaft: Offers a great balance of streetability and performance, ideal for a daily driver.
- GSC S2 Camshaft: Provides excellent mid-range power and top-end performance.
When selecting a camshaft, consider your driving style and whether you want a more aggressive setup or something more manageable for daily use.
ECU Tuning for Maximum Performance
ECU tuning is a vital step in optimizing the performance of your 4G63 engine. Proper tuning can unlock additional horsepower and improve overall drivability.
Popular ECU Tuning Options
- ECMlink: A popular choice among tuners, offering extensive tuning capabilities and real-time adjustments.
- AEM EMS: Provides advanced tuning features and is suitable for high-performance builds.
- MoTeC: A premium option for those looking for the best in tuning technology and features.
When tuning your ECU, it’s essential to have a wideband O2 sensor for accurate air-fuel ratio monitoring, which is critical for achieving optimal performance.
Supporting Parts for 450 HP Build
To support the power goals of 450 HP, several supporting parts must be upgraded to ensure reliability and performance. These components work together to provide the necessary airflow, fuel delivery, and cooling.
Essential Supporting Parts
- Upgraded Turbocharger: A larger turbo, such as the Garrett GT30, can provide the necessary boost for high horsepower.
- Intercooler: An upgraded front-mount intercooler helps reduce intake temperatures, improving performance and reliability.
- Fuel System: Upgrading to larger injectors (e.g., 1000cc) and a high-flow fuel pump is crucial for adequate fuel delivery.
- Exhaust System: A 3-inch turbo-back exhaust will improve exhaust flow and help achieve desired power levels.
- Upgraded Engine Internals: Forged pistons and rods are recommended for handling the increased power safely.
Each of these components plays a vital role in achieving and maintaining your power goals. Ensure that all parts are compatible and capable of supporting the desired horsepower.
Conclusion
Building a 4G63 Eclipse for 450 HP is an exciting project that requires careful planning and selection of components. By choosing the right camshaft, tuning your ECU effectively, and upgrading supporting parts, you can achieve impressive performance from this iconic engine. Always remember to consult with experienced tuners and mechanics to ensure the best results for your build.